Sash lock



W. POTTER oct. 19j, 1926.

SASH LOCK Filed July 1e. 1925 WLM. III

VEN? w NVENTOR Willian@ 'ler Patented Get. 19, 1926.

rarest 'WILLIAM POTTER, 0F NEV YORK, N. Y., SSGNOR T0 THE POTTER WINDO`W-LOCK CORIPORATON.

SASI-I LOCK.

Application filed July 16, 1925. Serial No. 43,897.

rlhis invention relates to window sash locks and particularly to devices ot this class ior locking); both the top and bottom sashes against opening' when in closed position or when the windows have been adjusted to predetermined open position; and the object ont the invention is to provide a device ot the class specified comprising part adapted to be secured to the top rail of the lower ish oi a window and includingaspring' arm adapted to be placed in engrag'ei'nent with one ot the side rails, and a parting; strip or bead ot the window 'trame in inclined position 'for retaining the sashes against opening; when Said spring arm is set in position; a 'further object being' to provide a device oi the class specified, in which the spring' arm is movably connected with the part attached to the rail ot the bottom sash whereby said arm may be retained in inoperative position when not in use; a iurther object being' to provide. the iree end portion ot the spring' arm with a cushioning' iface to prevent the inarring' of the window iti-ame and window sash when the device is in use and with these and other objects in view, the invention consists in a device ot the class and tor the purpose specified, which is sim ple in construction, eiiicient.- in use, and which is constructed as hereinafter described and claimed.

rlhe invention is 'Fully disclosed in the 'following' sl'iecitication, ot which the aecompanying' drawing' 'forms a part, in which the separate parts of my improvement are designated by suitable reference characters in cachot the views7 nd in whiehz- Fie'. 1 is a perspective view ot a part ot a window trame showing parts et the top and bottom sashes with my device mounted in connection therewith and illustrating the method of its use.

Fig'. 2 is a plan view of the construction shown in Fig'. 1; and p Fig. 3 is a broken section on the line 3 3 ot Fig. 2 of the drawing.

In carrying my invention into effect, I provide a plate 5 which is provided at one end portion with a projecting' flange or lip 6 and the other end portion of which has a raised or dome part 7, and mounted upon the plate 5 or the dome portion 7 thereof is a disk 8 domed to conform with the dome 7 and to rotate thereon, the disk 8 being riveted or otherwise retained against displacement from the plate 5 as seen at 9, and such disk is provided atoppositely disposed sides with raised and apertured ears 10.

l also en'iploy a spring' arm 11 which is snbstanti ally ot wish-bone or l! -shaped form, and preferably composed ot' heavy wire Yfashioned centrally to iorm one or more spring' loops 12, the end portions ot which are tlared laterally and provided with inwardly projecting' and slightly curved ends 13 which pass through the apertures of the ears 10 and rest upon the dome portion of the disk 3 as clearly seen in Figs. 1 and 2 ot the drawing. The construction ot the ends 13 and ennagen'ient with the dome portion ot the disk 8 is such as to normally hold the tree end of the arm 11 in sub- 'stantially horizontal position with relation to the plane of the plate 5 whereby when the arm is raised when in use, the arm is placed under tension.

Passed through the spring` loops 1.2 is, a rivet or other fastening; device 141 which serves torretain a cushion facing' 15 in position, which 'facing' is U-shaped in form and encircles the outer exposed portion ot the loops 12 as clearly seen in Fig'. 3 ot the drawing. The plate 5 is apertured to receive two or more screws or other attaehing' devices 1G for mounting' the plate 5 in connection with the top rail 17 ott the lower sash 13 as seen in Figs. 1 and 2 of 'the drawing. Then the plate 5 is mounted in position, it will be seen that the iiange or lip 6 engages the outer tace ot said top rail whereby the plate is rigidly retained in position a d reinforced by the iange or lip which is composed of thin metal and so constructed as to not interfere with the inovement ot the separate sashes, as will be apparent.

In Figs. 1 and 2 of the drawing, I have also shown part ot the top sash 19 and at 2O is shown the parting strip between the separate sashes 13 and 19, and in the use ot my improved device the plate 5 is secured to the top rail 17 of the lower sash 18 in such manner that when the arm 11 is raised to bring the Jfree end thereof or the cushion facing' 15 in engagement with one ot the side rails 21 of the top sash and the face ot the parting strip 20, said arm 11 will assume a position substantially forty-tive degrees to the horizontal plane of the top rail 17 of the bottom sash. 1When mounted in this position, when `both sashes 18 .and 19 are closed, the raising of .the lower sash 18 is prevented as Well as the lowering of the top sash, it

being apparent that the varm 11 operates ih the manner ot a. Wedge and prevents the movement of the separate sashes. It will also be apparent that the arm Will functionl to lock the sashes 18 and 19 when either one or both of the saine are in an open position; While it is possible to close either or both sashes When the arm is in operative position, it is impossible to further open the sashcsby virtue of the Wedge action and lock ot' said arm 11. The cushion facing 15 pre vents the marrineot the sashes and p: 1ting strip as previously stated, and in addition also provides a better gripping face to prevent slippage and it is preferred that said facing 15 be constructed ot leather, rubber or similar strong` and durable material.

It will be apparent that when the device is not in use or when it is desired toy provide a free opening` and closing of the separate sashes, the arln 11 may be moved into the position indicated in dotted lines in Fig. 1, Where the said arm rests upon the top oi the rail 17 and in longitudinal arrangement with reference thereto. It will also be apparent that the spring;- loops 12 operate to hold the flaringv side members oi3 the arin 11 in engagement with the ears 10 at all times, yet permitting ot the attachment and detachment ot said arm from the dish 8 Whenever desired.

It will be understood that While I have Shown certain details of construction tor carrying my invention into effect, that I am not necessarily limited to these details, and various changes in and modifications ot the construction herein shown and described, may be made Within the scope oi the appended claims without departing from the spirit of my invention or sacrificing its advantages.

Having' tully described my invention, what I claim as new and desire to secure by Letters Patent.y is

1. A device of the class described comprising a. mountingr plate, a sheet metal disk rotatably mounted on said plate, an arm carried by said disk and movable into angular positions with reference to said mounting plate, and said arm having spring properties for retaining the saine in operative position.

2. A device of the class described comprising a mounting plate, a sheet metal disk rotatablyinounted on said plate, an arm carried by said dislr and movable into angular positions with reference to said mounting plate, said arm having spring properties for retaining the same in operative position, and the tree end portion ot said arm being` fashioned to torni a spring` loop ior retaining said arm in engagement with said disk.

3. A device of the class described comprising a plate provided at one end with a tiange extending at an angle thereto, the other end p ,rtion ot said plate beine' domed, a dome-.saafped disk tixed'ly mounted upon said plate and rotatable on the donie portion thereof, said disl: seine; provieed with projectiiip,` and apertured ears on oppositely disposed sides thereof, a J-shaped spring arm, the free end portion of which is 'fashioned to torni a spring loop and the other ends ot which extend through said apertured ears and rest upon the dome ot said disk to give tension to said arm.

ll. A device ot the class described comprisinga a plate provided at one end with a tlangze extending at an angle thereto, the other end portion of said plate being,T domed, a domeshaped dish liftedly mounted upon said plate and rotatable on the dome portion the cot, said disk being provided with projecting and apertured ears on oppositcly disposed sides thereof, a il-shaped spring arm, the tree end portion ot which is 'fashioned to form a spring` loop and the other ends ot which' extend through said apertured ears and rest upon the dome of .said disk to ejive tension to said arm, and a cushion Facing covering the outer end portion ot said arm, and means for retaining said tacing` in connection with said arm.

5. A. device ot the class described comprisa plate adapted to be secured to a support, a disk lixedly mounted upon and rotatable on said plate, a. Wedge arm, means tor pivotally mountingl said arm in connection With said rotatable dislr, and means whereby said arm will be placed under tension when raised at an inclination to the horizontal plane of said plate.

In testimony that I claim the foregoing as niy invention I have signed my name this 14th day of July, 1925.

WILLIAM POTTER. 

